Printing-press.



PATENTED 0019,1006.

T. W. BARBER. PRINTING PRESS.

APPLIUATION FILED NOV. 13, 1905.

4 SHEETS-SHEET 1 n 0 n I W K N| R w R W Q 0 i0 %w y N m3 a o. 0 E

Flt/077W J44 Ba b by A5150 rrce/ No. 833,018. PATENTED OCT. 9, 1906.

T. W. BARBER.

PRINTING PRESS. APPLICATION FILED NOV. 13, 1905.

4 SHEETS-SHEET 2.

PATENTED 0019, 1906.

T. W. BARBER. PRINTING PRESS. APPLIOATION PILED NOV. 13, 1905.

4 sums-sum s.

Wlifimesses.

PATENTED OCT. 9, 1906.

' T. w. BARBER.

PRINTING PRESS.

APPLIUATION FILED NOV. 13, 1905.

4 SHEETS-SHEET 4.

mm W Z m e 0 M M f% fl m 0 m Wtl'nesses.

.To all whom. it may concern; I

Be it known that -.'I, TnoMAs WALTER- THOMAS WALTER BARBER. or LONDON,ENGLAND.

PRINTING-PRESS.

Specification of Letters Patent,

Patented Oct. 9, 1906,

Application filed November 18, 1905. Serial F0. 287,180..

' BARBER, a subject of the Kin of England,

such accidental stoppage and to provide anresiding at Westminstr,-Lonon, En land, have invented certain new and usefu Improvements inPrinting-Presses, of which the following is a specification. g

This invention relates to improvements in printingl-presses, and isparticularlapplicable. to t e type of apparatus descri ed in my previousUnited States patent, 'No. 7 95,785.

In apparatus of that type the valves of the driving-motor areoperatedautomatically at or near the ends of thelstrok e bytheengagement of an operating-lever with fixed stops. It is found thatwhen: the motor is driven very slowly (say for cleaning purposes) themomentum of the carria e may not be sufli cient to bring about comp eteoperation of the valves, so that the motor is brought to rest. Theobjects of this invention are to avoid the carriage-motor.

According to this invention an auxiliary motor actuated by the exhaust.from the main carriage-motor is employed to insure the operation of thevalves. This auxiliary valve-motor may comprise a double-acting cylindercommunicating with the exhaust valves of the main carriage-motor, andthe efiicient means for operating the valves of mechanically-operatedinlet and exhaust be broughtinto the path of valves ofthe main carriae-motor are operatively connectedsay by inkswith the piston of theauxiliary valve-motor. A

To set the auxiliaryvalve-motor in operation when the carria e reachesor approaches either end of the strfire, a pilot-valve may bemechanically opened to admit a portion of the. exhaust fluld from thecarriagemotor to one end of the valve-motor. For this purpose theexhaust-valves may be of the rotary type comprising two concentricsleeves with suitable orifices, one of the sleeves being automaticallyrotated by the movement of the can'iage-say by a projecting arm andfixed stop-andthe othersleeve being rotated by the valve-motor. In orderto vary the stroke of the carriagemotor, stops may be arranged atdifferent points in'the length of the press and may be carried onconcentric spindles having handles attached thereto, so that any J thevalve-operatm arm.

, the accompanying drawings, Figure 1 is one stop may a longitudinalsection of a portion of a rinting-press constructed in accordance witthis invention. Fi 1 is a continuation of Fig. 1, showing the le -handend or remaining portion of the press. Fig. 2 is a side elevation of thevalves and valve-operating gear alone, partly in section; and Fig. 3 isan end elevation ofv the press, partly in section.

Like letters indicate like parts throughout the drawings.

The carriage A is 'mounted to reciprocate on the frame B. Thedouble-acting fluidpressure cylinder C is attached to the under side ofthe carriage and provided with a piston D and piston-rods D, attached tothe frame B of'the press. At each end of the prises a slotted sleeve F,rotatable in the valve-chest. A short crank or arm F is attached to thesleeve, and the movement of the crank or arm brings the slot in thesleeve F opposite or away from the cylinder-port F Each exhaust-valve Ecomprises two concentric sleeves K and L, rotatable in the valve-chest.The outer sleeve K has a nar row slot K and a wide slot K Within this isan inner sleeve L, having one slot L constituting the pilot-valve. Theouter sleeve K carries a lever K and the inner sleeve has a short arm LNormally the narrow slot .K is opposite the outlet and the slot L doesnot colncide therewith.

The exhaust valves E communlcate, through conduits H, with the two endsof a small auxiliary cylinder J, supported by the main cylinder 0. Thecylinder J has an exhaust-outlet J midway of its length. Within thecylinder is a piston J having a pistonrod J at each side. Whenexhaust-gas from the cylinder 0 enters the auxiliary cyhnder J at eitherend, the piston J 2 is suddenly blownover to the 0p osite end. When thepiston J 2 has passed the exhaust-outlet J, 1t completes its stroke,owing to the momentum of the moving parts and to the fact that the wholeexhaust irom the cylinder C is being discharged through the aux liarycylinder J behind the piston J and the exhaust- .outlet J is madesufficiently small to maintain pressure behind the piston J zmomentarily after it has passed the exhaust-outlet J.

Each piston-rod J is connected by a link J to the lower end of one leverK and the other end of the lever K is connected by a rod M with theinlet-valve crank or arm F at the opposite end of the "cylinder, so thatthe movement of the piston J 2 shifts both the exhaust-valve sleeves Kand the inlet-valve sleeves F, The crank or arm F may be slotted at F,so that the opening of the inletvalve does not take place until thecorresponding exhaust-valve is closed. I V

Mounted on the frame of the press B is a support N, carrying three stops0 P Q on three concentric rotatable spindles O P Q, having handles 0 P Qattached thereto. By turning any one of these handles through a-rightangle the corresponding stop can be brought into the path of the shortarm L of the exhaust-valve at that end of the cylinder, so as to turnthe sleeve L The sleeves L being embraced by the sleeves K andfrictionally engaging therewith are turned when the sleeves K turn. Thelimiting closed position of the sleeve L is shown on the left hand inFig. 2, and the limitin open position-of the sleeve L is shown on t eright in Fig. 2. The sleeve L cannot move beyond its limitingositions.

' T e operation of the apparatus is as follows: One of the stops 0 P Qhaving been turned into the path of the arm L at each end of the press,according to the length of stroke required, fluid is admitted to one endof the cylinder, which commences tomove. As it a proaches the end of itsstroke, say the efthand end, the arm L strikes the stop and is shiftedover so as to bring the slot-L opposite the slot K, thus opening thepilot-valve and (permitting a cer- ,.tain uantityof exhaust fiui'topassfromthe cylin er C, through the conduit H, to the cylinder J. Thepiston J is thus blown over to the other end of the cylinder J e., tothe rightand the levers K are moved by t to the right. The sleeve K'(onthe left) 1s ,thus turned to bring the wide slot K opposite the slotL", and the exhaust-valve is then fully open. At the same time the otherexhaust-valve (on the right) is closed, the upper end of the lever K (onthe left) ulls t e rod M, and when the latter reaches t e end of theslot F it opens the inlet-valve F at the other end of the cylinder (onthe right) and the inlet-valve, (on the left,) which has been 0 ened, isclosed. Thus during the whole or t e early part of each stroke theinlet-valve F is opened to the acting end of the cylinder C, while theidle end of the cylinder 0 is opened to exhaust through the conduit Hand the outlet J.

This invention has been described in its application to theparticularprinting-press forming the subject of my previous patent abovementioned, but it is equally applicable to any other form of printingpress in whichthe 'valves of the carriage-motor are operated by themovement of the carriage itself.

It is to be understood that the details of construction and arrangementmay be varied without de artin from this invention. For example, side-va ves or drop-valves may be used in place of the rotary valvesshown. Also the exhaust-valves instead of having two operating-leversmay have one operating lever, which at low speeds may be moved slightlyby the stop to open the valve to a certain extent, when the auxiliarymotor will be brought into play to complete the movement.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a printing-press the combination of a reciprocating carriage, adouble-acting fluidpressure motor operatively connected there with andhaving inlet and exhaust valves, an auxiliary motor actuated by theexhaust from the carriagemotor and operatively connected with the inlet.and exhaust valves to insure their movement and means actuated by the,movement of the carriage for admitting exhaust to the auxiliary motor.

2. In a printing-press the combination of a reciprocating carriage, adouble-acting fluid-pressure motor operatively connected therewith andhaving an inlet and an exhaust Valve at each end, an auxiliary motorcommunicating at its ends respectively with the two exhaust-valves,means actuated by the movement of the carriage for admitting a fractionof the exhaust from the carriagemotor to the auxiliary motor, andoperative connections between the auxiliary motor and the main exhaustand inlet valves to insure their movement.

3: The combination with a printing-press of a reciprocating carriage, adouble-acting fluid-pressure motor operatively connected therewith, aninlet-valve and an exhaustvalve at each end of said motor, an auxiliarymotor communicating at its ends respectively with the twoexhaust-valves, each exhaustvalve comprising two operative partsconstituting a pilot exhaust-valve-and a main exhaust-valve, means foroperating the pilotvalve by the movement of the carriage, and operativeconnections between the auxiliary motor and the main exhaust-valves andinlet-valves to insure their movement.

4. The combination with a printing-press of a reciprocating carriage, adouble-acting fluid-pressure motor operatively connected therewith, aninlet-valve and an exhaustvalve at each end of said motor, an auxiliarymotor communicating at its ends respectively with the twoexhaust-valves, each exhaust? valve comprising two operative partsconstituting a pilot exhaust-valve and a main exhaust-valve, means foroperating the pilotvalve by the movement of the carriage, means forvarying the pointin the movement of the carriage at which eachpilotvalve is operated, and operative connections between the auxiliarymotor and the main exhaust-valves and inlet-valves to insure theirmovement.

5. In a printing-press the combination of a press-frame, a carriagemounted to reciprocate thereon, a main fluid-pressure cylinder securedto said carriage, a piston in the cylinder connected to the press-frame,an inlet--valve and an exhaust-valve at each end of said cylinder, adouble-acting auxiliary cylinder secured to the main cylinder, a pistonin that auxiliary cylinder, a central outlet from that cylinder, aconduit from each exhaust-valve to one end of the auxiliary cylinder.and operative connections between the piston and the auxiliary cylinderand the main inlet and exhaust valves.

6. In a printing-press the combination of a press-frame, a carriagemounted to reciproc ate thereon, a main fluid-pressure cylinderconnected to said carriage, a piston in the cylinder connected to thepress-frame, a rotary inlet-valve at each end of said cylinder, a rotaryexhaust-valve at eachend of said cylinder, a valve-operating leveroperatively connected with each exhaust-valve and the inlet-valve at theopposite end, a double-acting auxiliary cylinder secured to the maincylinder, a piston and piston-rods in that cylinder, a central outletfrom that cylinder, a conduit froln'each main exhaust-valve to one endof the auxiliary cylinder, and alink connecting eachnmin-valve-operating lever with the auxiliary piston-rod.

7. In a printing-press the combination of a press-frame, a carriagemounted to reciprocate thereon, a main fluid-pressure cylinder connectedto said carriage, apiston in the cylinder connected t-othe press-frame.a rotary inlet-valve at each end of said cylinder, a crank attached tosaid valve, a rotary exhaust-valve at each end of said cylinder,comprising an outer sleeve having a wide slot and a narrow slot, aninner concentric sleeve having one Wide slot constituting with the outernarrow slot a pilot-valve, a projecting arm attached to each innersleeve, a valve-operating lever attached to each out er sleeve, a linkconnecting the inlet-valve crank at each end with the operating-lever attheother end, a double-acting auxiliary cylinder secured to the maincylinder, at pisr ton and piston-rods in that cylinder, a central outletfrom that cylinder, a conduit from each main exhaust-valve to one end ofthe auxiliary cylinder, a link connecting each main-valve-operatinglever with the auxiliary piston-rod and a plurality of fixed stopsarranged in the path of the arm projecting from the inner exhaust-valvesleeve.

8. In a printing-press the combination with a press-frame, a carriagemounted to reciprocatethereon, a main fluid-pressure cylinder connectedto said carriage, a piston in the cylinder connectedto the press-frame,a

rotary inlet-valve at each end of said cylin- I der, a crank attached tosaid valve, a rotary exhaust-valve at each end of said cylinder,comprising an outer sleeve having a wide slot and a narrow slot, aninner concentric sleeve having one Wide slot constituting with the outernarrow slot a pilot-valve, a projecting arm attached to each innersleeve, a valve-operating lever attached to each outer sleeve, a linkconnecting the inlet-valve crank at each end with the operating-lever atthe other end, a double-acting auxiliary cylinder secured ,to the maincylinder, a PIS? ton and piston-rods in that cylinder, a central outletfrom that cylinder, a conduit from each main exhaust-valve to one end ofthe auxiliary cylinder, a link connecting each main-valve-operatinglever with the auxiliary piston-rod, a plurality of stops disposed atdifferent points in the length of the press and arranged to be broughtinto the path of the arms projecting from the inner exhaust-valvesleeves, concentric rotatable spindles mounted on the press-frame andcarrying said stops and handles on said spindles.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS WALTER BARBER.

